Hi Sasa I have conected 30 steps mechanical encodes to MB64E and all is good. Speed or number of steps of encoders is no problem. I think that your problem is setting of program. In your video I saw blink only 2 LEDs and it looks that you have at pin of your enc assigned standard button function. Watch your mios_tables.inc if you have at MIOS_ENC_PIN_TABLE set this row: ENC_ENTRY 5, 0, MIOS_ENC_MODE_DETENTED ; (5 is the SR5 and 0 is assingned pins(0-1) of SR) position of this row in the ENC list is the nuber of ENC (when the row is first then ENC1) Look to main.asm too if you have set good LEDrings assigment. In your cause I think that : LEDRINGS_SR_ENC1_16_CATHODES_1 5 LEDRINGS_SR_ENC1_16_CATHODES_2 6 LEDRINGS_SR_ENC1_16_ANODES_1 7 LEDRINGS_SR_ENC1_16_ANODES_2 8 and on the bigin of main.asm - Number of connected encoders must not 0 So this is all what I remember, try to check this sets and if you good know this setting sorry for this reply ;) B.R. LX